HK 3370 (serv.man10) - Harman Kardon Audio User Guide / Operation Manual. Page 7

REAR PANEL CONNECTIONS  7

 AM Antenna: Connect the AM loop anten-
na supplied with the receiver to these
terminals. If an external AM antenna is used,
make connections to the AM and GND
terminals in accordance with the instructions
supplied with the antenna.

 FM Antenna: Connect an indoor or external
FM antenna to this terminal.

 Phono Ground: Connect the ground wire
from a turntable to this terminal to reduce sys-
tem hum.

 Remote IR In: If the HK 3370’s front panel
IR sensor is blocked due to cabinet doors or other
obstructions, an external IR sensor may be used.
Connect the output of the sensor to this jack.

 Remote IR Out: This connection permits
the IR sensor in the receiver to serve other
remote controlled devices. Connect this jack to
the “IR IN” jack on Harman Kardon or other
compatible equipment.

 Phono Inputs: Connect the outputs of your
turntable or tone arm to these jacks. Note that
only Moving Magnet (MM) type cartridges may
be used.

 CD Inputs: Connect these jacks to the out-
put of a compact disc player or CD changer.

 Aux Inputs: Connect these jacks to the line-
level audio output of any device such as a TV,
cable converter or portable audio player.

 Tape Monitor Play/In: Connect these jacks
to the Play/Out jacks of an audio recorder.

 Tape Monitor Record/Out: Connect these
jacks to the Rec/In jacks of an audio recorder.

NOTE: When these jacks are connected to a
three-head recorder or another device with off-
head playback, it will be possible to monitor the
source being recorded.

 Tape 2 Play/In: Connect these jacks to the
PLAY/OUT jacks of a second audio recorder.

 Tape 2 Record/Out: Connect these jacks to
the Rec/In jacks of a second audio recorder.

 Main In: These jacks are the input to the
HK 3370’s power amplifier. Unless an external
power amplifier is used, the jumper pins should
remain connected to the Preamp Out jacks 

.

 Pre-Out/Main-In Jumper Pins: These pins
connect the receiver’s preamp and amplifier sections.
Unless an external amplifier, equalizer or speaker
processor is used, they should be left connected. See
page 11 for more information on external amplifier
connections.

 Preamp Out: These jacks provide an output
for the left and right channels to an optional
external amplifier. In normal operation, unless
an external power amplifier is used, the jumper
pins should remain connected to the Main In
jacks 

.

 Subwoofer Out: Connect these jacks to the
line-level input of a powered subwoofer. If an
external subwoofer amplifier is used, connect this
jack to the subwoofer amplifier input. When a
single, mono subwoofer is used, make the con-
nection to the bottom jack.

 Speaker 1 Terminals: Connect these ter-
minals to the appropriate terminals on your
speakers.

 Speaker 2 Terminals: Connect these ter-
minals to the appropriate terminals on your
speakers.

 Switched AC Outlet: These outlets may be
used to power low-current draw devices such as
CD players or cassette decks. The power to these
outlets remains on as long as the receiver itself
is on. When the receiver is turned off, or placed
in the Standby mode, power to these outlets is
removed.

NOTE: The power consumption of the devices
plugged into these outlets should not exceed
100 watts.

 Power Cable: Connect the AC plug to a
nonswitched AC wall output.